The Inta Zero is a unique anti-freeze valve designed and engineered to protect heat pump systems that are operating with water.
Designed to discharge when the system water temperature drops to 3°C, preventing ice from forming in the heat pump circuit that could cause breakdown or costly damage to the system.

The Inta Zero has a unique outlet profile which effectively clears drips during water discharge into freezing conditions. This helps prevent ice formations and potential blockages.

The Inta Zero has been designed and engineered to avoid negative influences from low ambient temperatures by directly positioning the element in the system water flow, permitting accurate system discharge only when it is truly needed.

A protective ring has been included in the construction to prevent system debris from clogging the operation of the valve.

Double O-rings and reduced surface friction treatment on the operating member also ensure correct operation and reliability even after years of non-movement.

Building regulations Part L states that all external pipework on an Air Source Heat Pump System should be fully insulated to reduce heat loss and maintain system efficiency.

The Inta Zero’s thermostatic element sits directly in the system’s water flow, allowing it to accurately react to the temperature of the system, regardless of ambient temperature. This means the Inta Zero can be fully insulated to help maintain the COP and SCOP of your system without affecting the operation.
The Inta Zero is a unique and effective way to protect a heat pump from the elements.
The Inta Zero anti-freeze valve valve is designed to discharge water from the system when the temperature drops to 3°C, preventing ice from forming and causing costly damage.
To protect the air inlet hose against blockages, unlike it’s competitiors, Inta Zero is available with a patent-pending cover which fully protects the inlet from the elements.
Inta Zero can be used with all brands of heat pump, including; Worcester Bosch, Vaillant, Baxi, Ideal and Caleffi.
The only Anti-Freeze Valve with an optional patented protective debris shield
The air inlet valve is fully protected from ingress of dust, dirt, leaves and insects to allow air to flow freely and quickly into the valve should the system ever need to purge.
Inta Zero will discharge only when the system temperature drops to 3°C. Inta Zero isn’t affected by ambient temperature.
Building Regulations state that all external fittings should be insulated. Inta Zero has an optional pre-cut insulation jacket available, which protects the device from changes in ambient air temperature which could trigger an unnecessary system discharge.
The Inta Zero has a Nickel & PTFE coated operating piston which provides an almost frictionless operation.
The patent pending anti-drip outlet prevents water droplets freezing and blocking the outlet in the event of a system discharge.
The discharged water will not form droplets and freeze around the outlet thanks to a tapered zero-drip design.